Google Code-in

MusicBrainz has a number of documentation pages, which are copied from the MusicBrainz Wiki. One of these articles gives an overview of the various entities in MusicBrainz: https://wiki.musicbrainz.org/MusicBrainz_Entity

However, this list is not really a good list since some entries are not entities at all or not proper entities.

You task is to look into this list and determine which ones are proper entities and figure out how to handle the ones that are. (E.g., should they be removed completely? Should the be put into a separate list on the same page? Should the actual entities be split into "first class" and "second class"?)